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Re: 853 bobcat how do I bleed the air from the drive...
Either there are bleed screws, or you find a hose connection at a high spot and crack it open just enough to vent until fluid starts coming out in steady stream.
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Check out the filters,and is the proper weight oil for the hydraulic been changed lately and refilled with correct oil. May have air in the line as well, bleed the line
if the hydraulic oil is from the auger head then the machine will fill and bleed out the air
the hydraulic oil would have been in the hydraulic motor that drives the auger
either on the pump or fuel filter case there will be a small hand pump that you pump the fuel to the fuel pump. there are small bleed screws at the filter or on the pump that you open partially and as you pump you will see air and fuel come out. keep pumping until you get solid fuel then close off. The pump may be round so you will have to unscrew the top and that will allow the pump plunger to move . When finished do up the plunger again. Once the air is out of the system, crack the injector line nuts at each injector and crank the engine until there are drops of fuel at the nut, tighten up the nuts and it should start.
drain the coolant
ok you will see a pulley with NO GROVES with FOUR 10mm bolts that's the water pump losen the 4 bolts then remove the drive belt remove the 4 bolts prev. loosed and remove that pulley then there are FIVE 8mm bolts holding the water pump to front cover remove the 5 water pump bolts then use a screwdriver and hammer and tap the pump to seperate the pump from the cover clean the old gasket off
install the new water pump and gasket
reassemble the vehicle
loosen the AIR BLEED SCREW ON THE BYPASS PIPE ABOVE THE WATER PUMP
refill the cooling system with coolant prev drained till a steady stream is coming out the AIR BLEED SCREW the close the bleed screw
if you need to add more coolant USE ONLY GM DEXCOL
then set your heater controls to VENT AND HOT
start the vehicle and let run till HOT AIR IS COMING OUT OF THE VENTS not WARM this will insure no air locks
hope this was help full
the pump may have air trapped inside, sometimes it will bleed itself out. if after several days it doesnt go away, have the shop that replaced it, ck it, it may be a bad rebuilt pump??
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